The hydroxyl group has hydrophilic properties. As the oxygen atom has higher electronegativity, the electron pair from the water hydrogen atom is attracted to it, creating a negative charge. This is also a polar group and enhances hydrogen bonding in organic compounds.
Hydroxyl groups are polar, and the oxygen side is always negative, while the hydrogen side is always positive. The hydroxyl group is an integral component of organic chemistry. It may only consist of a pair of atoms, but without it, many important substances, such as sugars and alcohols, would not exist.